Lever mechanism for air-guns.



Patented Oct. 17, 1916.

Ciad esZefcv/er C. F. LEFEVEH.

LEVER MECHANISM FOR AIR GUNS.

.APPLICATION P ILED MAR 3l, i916.

m; Nou/ees Perses ca., Fnomvurua wasumcmu. nv c Nrran STATES PATENTOFFICE.

CHARLES F. LEFEVER, 'OF PLYMOUTH, MICHIGAN, ASSIGNOR TO DAISY MANUFAC-TURING COMPANY, OF PLYMOUTH, MICHIGAN, A CORPORATIONVOF MICHIGAN.

LEVER MECHANISM FOR AIR-GUNS.

Specication of Letters Patent.

Application led March 31, 1916. Serial No. 87,945.

To all whom t may concern:

Be it known that I, CHARLES F. LEFEVER, a citizen of the United Statesof America, residing at Plymouth, in the county of Wayne and State ofMichigan, have invented certain new and useful Improvements in LeverMechanism for Air-Guns, of which the following is a specification,reference being had thereinto the accompanying drawings.

The invention relates to air guns of that type commonly known as pumpguns in which the compression of the spring is effected by the slidingof a handle longitudinally of the barrel. This handle is connected witha lever mechanism for actuating the movable member that compresses thespring, and the present invention relates'to animprovement in thisoperating mechanism.

In the drawings: Figure 1 is a 'sectional elevation of the gun to whichmy improved mechanism is applied; the actuating handle being inretracted position; and Fig. 2 is a sectional elevation with theactuating handle in extended position.

As specically shown, my improved lever mechanism is applied to a gunhaving atelescopic barrel in which the inward movement of the barreleffects the compression ofthe spring. They lever mechanism is, however,

Vadapted for application to other'types of As shown, A is the rearbarrel lwhich is attached to the stock B, and C is the'forward barreltelescopically engaging 'the barrel A.

D is the piston abutment inthe barrel C,

E the piston, F the shank and G the spring sleeved upon the shank, oneend bearing against the piston and the opposite end against an abutmentH in the barrel A, which rabutment passes through a longitudinal slot inthe barrel C permitting the telescopic movement thereof.

I is a shoulder at the rear end of theshank F for engagement with thesear J which is upon the trigger K, the arrangement being such that therearward movement of the barrel C will carry with it the abutment D andpistonE, compressing the spring G againstV the abutment I-I and carryingthe shoulder I into engagement withthe sear J. My improved levermechanism is designed to ac-v are so compounded that the power1`isincreased in proportion to the increased resistance of the spring as itis compressed, rendering the final movement as easy as the initialmovement. Y

In detail, L is the actuating handle, which is slidably mounted upon 'aguide M parallel to the barrel C. y

N and O are two members of a break-joint lever which extends from thehandle VL to the frame P at a point slightly in advance of the trigger.The two links N and Cof this lever are respectively pivotally connectedat Q and R to the handle L and frame P and are pivotally connected toeachother at S, the latter pivot being below the line connecting thepivots Q and R, so that the lever will break downward. Each of the linksN and O is in the form of a channel bar, thereby constituting a' housingfor concealing the cooperating mechanism.l This cooperating mechanismcomprises a lever T pivotally connected at U to the link C and having aslidable engagement at its inner end with a fulcrum pin V on the frame.lThe outer end of the lever T is pivotally connected to a link W, theopposite end of which is attached to they telescopic barrelC, preferablyto the bracket `X which supports one end of the guide M. v

The arrangement and proportion of the parts just described is such thatin the initialposition of the operating handle L the members N and O andW and T lie in substantial parallelism. When the handle is 'drawnbackwardr the links N and C are bentdownward and the swinging of thelinkO about'the center R will carry the pivot `U downward and rearwardin relation to the stationary pivot V, which will swing the lever Tdrawing forward on the link W and carrying the barrel C backward. Duringthe initial movement the leverage is least favorable for power, but thetension'of the springis slight and interposes comparatively littleresistance. As

- more favorable for power through the coming its movable en d attachedto thel powerbined efl'ect of the more favorable angle of the link O andthe elongation of the arm of the lever T between the pivot U andthestationary pivot V. The result is that the nal movement whichhas thegreatest resistance to overcome is performed as easily as the initialmovement. y

It will be observed that the members N and O constitute a hollow toggleand that the members'W and T constitute a second toggle housed withinthe first and initially having its members arranged in substantialparallelism thereto. Further, the` inner toggle formed by the members W'and T has a changing'leverage by the change in distance between thepivot U and a stationary pivot V, the lever T being slotted at T topermit of such movement. Also the inner toggle has aV greater angularmovement but a lesser longitudinal movement at its connection with thebarrel C than the movement of the handle L. It is due to these featuresof the construction that lthe change of leverage is obtained, whichdecreases the jpowerrrequired for the final compression of the spring. I

What I claim as my Yinvention is i l. In a gun, the combination with amember movable for the storage of power, ofa longitudinally-movableactuating member,

- a break-down toggle lever operated by said actuating member, a secondtoggle lever having its movable end attached to said member for thestorage of power, and a connection between the two toggles rforactuating the second from the first witha progressive increase inpower.

2. In a gun, the combination with a movable power-storage member, of alongitudinally-movable actuating member, a breakdown toggle leverdirectly actuated by said actuating member, a second toggle leverhavstorage member, and a pivotal connection between one ofthe linksofthe first toggle and that of the second togglefor transmitting thekmovement of the one to the other.

` In a gun, the combination with a member movable for power storage, ofa longitudinally-movable actuating member, a toggle lever directlyactuated from said actuating member having its linksinitially in sub'-.stantial'alinement, a second toggl'erlever hav- "ing its links insubstantial parallelism with the links" offthe firsttoggle llever andthe4 movable end c'onnected to Asaid power-storagevy member, and aconnectionfbetween the cory responding Vlinks of-the twotoggle'sforcom'- municating movement fromioneto the otherwithanfincrease mfpovver.f f

.y f4. In a gaa, the sembrare@ with a am!V A able power-storage member,of a llongitudi'- nal actuating member, a hollow toggle lever directlyactuated thereby and having its links initially in substantialalinement, a secondtoggle concealed within the first toggle lever andhaving its movable end connected to said power-storage member, one of'the links of said second toggle lever being pivotally connected to alink of the first lever and having a slidable connection with itsstationary fulcrum for producing an increase in power.

5. In a gun, the combination with a barrel having an extensiontelescopically movable for the storage' of power, an actuating membermovable parallel to 'said barrel, a toggle lever directly connected tosaid actuating member and having its linksinitially in substantialalinement, a second toggle lever` having its movable end connected tothe telescopic extension 'of said barrel and a connection between said`first and second toggle levers for communicating the movement of theformer to the latter with an increase in power. y 6. In a gun, thecombination with a barrel having an extension` telescopically movablefor the storage of power, of an actuating member movable parallel tosaid barrel, a hollow toggle lever 'directly actuated by said member,and having its links initially in substantial" alinement, `a secondtoggle lever within the first having its linksinitially in substantialparallelism thereto and the movable end attached to said telescopicextension, and a pivotal connection between the vlinks of said togglesimparting the movement of the first to the seconden the increase inpower.

7 In a gun, the combination with a barrel and an extension thereoi;ltelescopically movable for the storage of power, of an actuating membermovable parallel to said barrel, a hollow toggle lever directly actuatedtherebv having its opposite end engaging a stationary pivot, a secondtoggle lever within the first having one end engaging a secondstationary pivot andthe opposite end connected to said telescopic'barrel, a pivotal connection between the links of said first and secondtoggle which engage said stationarypivots, and means for permitting theincrease in distance between the point of pivotalv connection betweensaid' toggle levers and the engagement of said second toggle with' itsstationary pivot vfor producing' a said guide, a Vhollow toggle leverdirectly connectedat onev end to said actuating member and engaginga'stationary pivot Yat its' opposite end, a second toggle lever withinIn testimony whereof I aix my signature the iist having one end pvotallyattached to in presence of two witnesses.

said guide and the opposite end slidably en- CHARLES F. LEFEVER. gaggingn stationary pivot, and a pivotal conlVitnesses:

nection between tlie corresponding links of l/V. B. LOMBARD,l

said toggles. E. C. HOUGH.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents, Washington, D. C.

